Since i forgot my nokia security code and i already got my security master code,...

[Unregistered]

...how can i use it ? I already try entering the master security code but i still got a "Code error" response

I will help you

[Unregistered]

...how can i use it ? I already try entering the master security code but i still got a "Code error" response

Where did you get the master reset code from? If it was from some generated source, the code must be a wrong one. You need to get the accurate master reset code from any trusted source. For example, you can visit Unlock-Free.com and get the accurate master reset code for most of the basic model Nokia phones for free. Good luck.